Home / 138,650.93-207,976.40-45,156.68

Finding the Fourth Proportional to 138,650.93, 207,976.40 and 45,156.68

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Solution

The fourth proportional to 138,650.93, 207,976.40 and 45,156.68 is: 67,735.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,650.93 : 207,976.40 = 45,156.68 : x
  2. Step 2: Convert to fraction form
    138,650.93/207,976.40 = 45,156.68/x
  3. Step 3: Cross multiply
    138,650.93x = 207,976.40 × 45,156.68
  4. Step 4: Simplify right side
    138,650.93x = 9,391,524,036.51
  5. Step 5: Solve for x
    x = 9,391,524,036.51/138,650.93
  6. Step 6: Final answer
    x = 67,735.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.